refactor(history): commit development branch

new development branch from root commit

sh/ffmpeg.sh

@@ -0,0 +1,194 @@
+# ╭────────┬─────────┬───────╮
+# │ ffmpeg │ devices │ reset │
+# ╰────────┴─────────┴───────╯
+
+_rwx_cmd_rwx_ffmpeg_devices_reset() { rwx_ffmpeg_devices_reset "${@}"; }
+rwx_ffmpeg_devices_reset() {
+	local module="uvcvideo"
+	modprobe --remove "${module}" &&
+		modprobe "${module}"
+}
+
+# ╭────────┬────────┬─────────╮
+# │ ffmpeg │ device │ formats │
+# ╰────────┴────────┴─────────╯
+
+rwx_ffmpeg_device_formats() {
+	local device="${1}"
+	[ -n "${device}" ] || device="/dev/video0"
+	ffmpeg \
+		-f "v4l2" \
+		-list_formats "all" \
+		-i "${device}"
+}
+
+# ╭────────┬───────╮
+# │ ffmpeg │ input │
+# ╰────────┴───────╯
+
+rwx_ffmpeg_input_blue_yeti() {
+	local device="alsa_input.\
+usb-Generic_Blue_Microphones_2051BAB04XY8-00.analog-stereo"
+	set -- \
+		-f "pulse" \
+		-i "${device}" \
+		-ac "2" \
+		-ar "48000"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_input_dell_precision() {
+	local device="alsa_input.\
+pci-0000_00_1f.3.analog-stereo"
+	set -- \
+		-f "pulse" \
+		-i "${device}" \
+		-ac "2" \
+		-ar "48000"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_input_file() {
+	local file="${1}"
+	local from="${2}"
+	local to="${3}"
+	[ -n "${file}" ] || return
+	set -- \
+		-i "${file}"
+	if [ -n "${to}" ]; then
+		set -- "${@}" \
+			-ss "${from}" \
+			-to "${to}"
+	fi
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_input_hdmi() {
+	local device="${1}"
+	[ -n "${device}" ] || device="/dev/video0"
+	set -- \
+		-f "v4l2" \
+		-video_size "1920x1080" \
+		-framerate "60" \
+		-input_format "yuyv422" \
+		-i "${device}"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+# ╭────────┬────────╮
+# │ ffmpeg │ output │
+# ╰────────┴────────╯
+
+rwx_ffmpeg_output_audio_fast() {
+	set -- \
+		-codec:a "flac" \
+		-compression_level "0"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_audio_slow() {
+	set -- \
+		-codec:a "libopus" \
+		-b:a "128k"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_file() {
+	local file="${1}"
+	[ -n "${file}" ] || return
+	set -- \
+		-y "${file}"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_video_fast() {
+	set -- \
+		-codec:v "libx264" \
+		-preset "ultrafast" \
+		-crf "0"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_video_slow() {
+	local crf="${1}"
+	local codec="${2}"
+	[ -n "${codec}" ] || codec="libx264"
+	if [ -z "${crm}" ]; then
+		case "${codec}" in
+		"libx264") crf="23" ;;
+		"libx265") crf="28" ;;
+		*) ;;
+		esac
+	fi
+	set -- \
+		-codec:v "${codec}" \
+		-preset "veryslow" \
+		-crf "${crf}" \
+		-movflags "+faststart" \
+		-pix_fmt "yuv420p"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+# ╭────────┬────────╮
+# │ ffmpeg │ record │
+# ╰────────┴────────╯
+
+rwx_ffmpeg_record_hdmi_precision() {
+	local file="${1}"
+	[ -n "${file}" ] || return
+	# LATER alternative
+	# shellcheck disable=SC2046,SC2312
+	set -- \
+		$(rwx_ffmpeg_input_hdmi) \
+		$(rwx_ffmpeg_input_dell_precision) \
+		$(rwx_ffmpeg_output_video_fast) \
+		$(rwx_ffmpeg_output_audio_fast) \
+		$(rwx_ffmpeg_output_file "${file}")
+	echo "${@}"
+	ffmpeg "${@}"
+}
+
+rwx_ffmpeg_record_hdmi_yeti() {
+	local file="${1}"
+	[ -n "${file}" ] || return
+	# LATER alternative
+	# shellcheck disable=SC2046,SC2312
+	set -- \
+		$(rwx_ffmpeg_input_hdmi) \
+		$(rwx_ffmpeg_input_blue_yeti) \
+		$(rwx_ffmpeg_output_video_fast) \
+		$(rwx_ffmpeg_output_audio_fast) \
+		$(rwx_ffmpeg_output_file "${file}")
+	echo "${@}"
+	ffmpeg "${@}"
+}
+
+# ╭────────┬────────╮
+# │ ffmpeg │ reduce │
+# ╰────────┴────────╯
+
+rwx_ffmpeg_reduce() {
+	local input="${1}"
+	local output="${2}"
+	local from="${3}"
+	local to="${4}"
+	[ -n "${output}" ] || return
+	# LATER alternative
+	# shellcheck disable=SC2046,SC2312
+	set -- \
+		$(rwx_ffmpeg_input_file "${input}" "${from}" "${to}") \
+		$(rwx_ffmpeg_output_video_slow) \
+		$(rwx_ffmpeg_output_audio_slow) \
+		$(rwx_ffmpeg_output_file "${output}")
+	echo "${@}"
+	ffmpeg "${@}"
+}